4371d91433
and scsipi_device respectively, with size reduction of ncr53c9x_softc. Specifying NULL instructs the driver to use default adapter and default device codes. Every target port has ncr53c9x_attach(sc, NULL, NULL) anyway.
341 lines
9.8 KiB
C
341 lines
9.8 KiB
C
/* $NetBSD: asc.c,v 1.17 2000/06/05 07:59:50 nisimura Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
|
|
* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1994 Peter Galbavy
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Peter Galbavy
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Based on aic6360 by Jarle Greipsland
|
|
*
|
|
* Acknowledgements: Many of the algorithms used in this driver are
|
|
* inspired by the work of Julian Elischer (julian@tfs.com) and
|
|
* Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
|
|
*/
|
|
|
|
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.17 2000/06/05 07:59:50 nisimura Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/user.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include <dev/scsipi/scsi_all.h>
|
|
#include <dev/scsipi/scsipi_all.h>
|
|
#include <dev/scsipi/scsiconf.h>
|
|
#include <dev/scsipi/scsi_message.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/cpu.h>
|
|
|
|
#include <dev/ic/ncr53c9xreg.h>
|
|
#include <dev/ic/ncr53c9xvar.h>
|
|
|
|
#include <dev/tc/tcvar.h>
|
|
#include <alpha/tc/tcdsvar.h>
|
|
#include <alpha/tc/ascvar.h>
|
|
|
|
int asc_tcds_match __P((struct device *, struct cfdata *, void *));
|
|
void asc_tcds_attach __P((struct device *, struct device *, void *));
|
|
|
|
/* Linkup to the rest of the kernel */
|
|
struct cfattach asc_tcds_ca = {
|
|
sizeof(struct asc_tcds_softc), asc_tcds_match, asc_tcds_attach
|
|
};
|
|
|
|
/*
|
|
* Functions and the switch for the MI code.
|
|
*/
|
|
u_char asc_tcds_read_reg __P((struct ncr53c9x_softc *, int));
|
|
void asc_tcds_write_reg __P((struct ncr53c9x_softc *, int, u_char));
|
|
int asc_tcds_dma_isintr __P((struct ncr53c9x_softc *));
|
|
void asc_tcds_dma_reset __P((struct ncr53c9x_softc *));
|
|
int asc_tcds_dma_intr __P((struct ncr53c9x_softc *));
|
|
int asc_tcds_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
|
|
size_t *, int, size_t *));
|
|
void asc_tcds_dma_go __P((struct ncr53c9x_softc *));
|
|
void asc_tcds_dma_stop __P((struct ncr53c9x_softc *));
|
|
int asc_tcds_dma_isactive __P((struct ncr53c9x_softc *));
|
|
void asc_tcds_clear_latched_intr __P((struct ncr53c9x_softc *));
|
|
|
|
struct ncr53c9x_glue asc_tcds_glue = {
|
|
asc_tcds_read_reg,
|
|
asc_tcds_write_reg,
|
|
asc_tcds_dma_isintr,
|
|
asc_tcds_dma_reset,
|
|
asc_tcds_dma_intr,
|
|
asc_tcds_dma_setup,
|
|
asc_tcds_dma_go,
|
|
asc_tcds_dma_stop,
|
|
asc_tcds_dma_isactive,
|
|
asc_tcds_clear_latched_intr,
|
|
};
|
|
|
|
int
|
|
asc_tcds_match(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
|
|
/* We always exist. */
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Attach this instance, and then all the sub-devices
|
|
*/
|
|
void
|
|
asc_tcds_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct tcdsdev_attach_args *tcdsdev = aux;
|
|
struct asc_tcds_softc *asc = (void *)self;
|
|
struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x;
|
|
|
|
/*
|
|
* Set up glue for MI code early; we use some of it here.
|
|
*/
|
|
sc->sc_glue = &asc_tcds_glue;
|
|
|
|
asc->sc_bst = tcdsdev->tcdsda_bst;
|
|
asc->sc_bsh = tcdsdev->tcdsda_bsh;
|
|
asc->sc_dma = tcdsdev->tcdsda_sc;
|
|
|
|
sc->sc_id = tcdsdev->tcdsda_id;
|
|
sc->sc_freq = tcdsdev->tcdsda_freq;
|
|
|
|
/* gimme Mhz */
|
|
sc->sc_freq /= 1000000;
|
|
|
|
asc->sc_dma->sc_asc = asc; /* XXX */
|
|
|
|
tcds_intr_establish(parent, tcdsdev->tcdsda_chip, ncr53c9x_intr, sc);
|
|
|
|
/*
|
|
* XXX More of this should be in ncr53c9x_attach(), but
|
|
* XXX should we really poke around the chip that much in
|
|
* XXX the MI code? Think about this more...
|
|
*/
|
|
|
|
/*
|
|
* Set up static configuration info.
|
|
*/
|
|
sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB;
|
|
sc->sc_cfg2 = NCRCFG2_SCSI2;
|
|
sc->sc_cfg3 = NCRCFG3_CDB;
|
|
if (sc->sc_freq > 25)
|
|
sc->sc_cfg3 |= NCRF9XCFG3_FCLK;
|
|
sc->sc_rev = tcdsdev->tcdsda_variant;
|
|
if (tcdsdev->tcdsda_fast) {
|
|
sc->sc_features |= NCR_F_FASTSCSI;
|
|
sc->sc_cfg3_fscsi = NCRF9XCFG3_FSCSI;
|
|
}
|
|
|
|
/*
|
|
* XXX minsync and maxxfer _should_ be set up in MI code,
|
|
* XXX but it appears to have some dependency on what sort
|
|
* XXX of DMA we're hooked up to, etc.
|
|
*/
|
|
|
|
/*
|
|
* This is the value used to start sync negotiations
|
|
* Note that the NCR register "SYNCTP" is programmed
|
|
* in "clocks per byte", and has a minimum value of 4.
|
|
* The SCSI period used in negotiation is one-fourth
|
|
* of the time (in nanoseconds) needed to transfer one byte.
|
|
* Since the chip's clock is given in MHz, we have the following
|
|
* formula: 4 * period = (1000 / freq) * 4
|
|
*/
|
|
sc->sc_minsync = (1000 / sc->sc_freq) * tcdsdev->tcdsda_period / 4;
|
|
|
|
sc->sc_maxxfer = 64 * 1024;
|
|
|
|
/* Do the common parts of attachment. */
|
|
ncr53c9x_attach(sc, NULL, NULL);
|
|
}
|
|
|
|
/*
|
|
* Glue functions.
|
|
*/
|
|
|
|
u_char
|
|
asc_tcds_read_reg(sc, reg)
|
|
struct ncr53c9x_softc *sc;
|
|
int reg;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
u_char v;
|
|
|
|
v = bus_space_read_4(asc->sc_bst, asc->sc_bsh,
|
|
reg * sizeof(u_int32_t)) & 0xff;
|
|
|
|
return (v);
|
|
}
|
|
|
|
void
|
|
asc_tcds_write_reg(sc, reg, val)
|
|
struct ncr53c9x_softc *sc;
|
|
int reg;
|
|
u_char val;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
bus_space_write_4(asc->sc_bst, asc->sc_bsh,
|
|
reg * sizeof(u_int32_t), val);
|
|
}
|
|
|
|
int
|
|
asc_tcds_dma_isintr(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
return (tcds_dma_isintr(asc->sc_dma));
|
|
}
|
|
|
|
void
|
|
asc_tcds_dma_reset(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
tcds_dma_reset(asc->sc_dma);
|
|
}
|
|
|
|
int
|
|
asc_tcds_dma_intr(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
return (tcds_dma_intr(asc->sc_dma));
|
|
}
|
|
|
|
int
|
|
asc_tcds_dma_setup(sc, addr, len, datain, dmasize)
|
|
struct ncr53c9x_softc *sc;
|
|
caddr_t *addr;
|
|
size_t *len;
|
|
int datain;
|
|
size_t *dmasize;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
return (tcds_dma_setup(asc->sc_dma, addr, len, datain, dmasize));
|
|
}
|
|
|
|
void
|
|
asc_tcds_dma_go(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
tcds_dma_go(asc->sc_dma);
|
|
}
|
|
|
|
void
|
|
asc_tcds_dma_stop(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
#if 0
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
#endif
|
|
|
|
/*
|
|
* XXX STOP DMA HERE!
|
|
*/
|
|
}
|
|
|
|
int
|
|
asc_tcds_dma_isactive(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
return (tcds_dma_isactive(asc->sc_dma));
|
|
}
|
|
|
|
void
|
|
asc_tcds_clear_latched_intr(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
|
|
|
|
/* Clear the TCDS interrupt bit. */
|
|
(void)tcds_scsi_isintr(asc->sc_dma, 1);
|
|
}
|